保定地区进入八十年代后降雨减少,水资源严重缺乏,地下水位急剧下降,供需矛盾日益突出,给农业生产带来极为不利的影响。 自1988年保定地区被列入海河流域农业开发区以来,我们下大力进行了节水工程的建设,主要采取了地下防渗的工程措施。六年来在开发区共铺设管道501.4万米,取得了明显的节水效果。随着农业开发的不断深入,人们对防渗管道的布置形式也在不断的探讨。实践证明,一级防渗管道尽管投资低,也有一定的效果,但并没有发挥防渗管道的最佳效益;直接铺成二级防渗,节水效果十分明显, Baoding area into the 1980s after the rainfall decreased, a serious lack of water resources, groundwater level dropped sharply, the contradiction between supply and demand has become increasingly prominent, to bring extremely adverse agricultural production. Since 1988, Baoding was included in the Haihe River Basin Agricultural Development Zone, we have vigorously carried out the construction of water-saving projects, mainly to take underground impervious engineering measures. In the past six years, a total of 5.014 million meters of pipelines have been laid in the development zone and a clear water saving effect has been achieved. With the deepening of agricultural development, people are constantly discussing the layout of impervious pipes. Practice has proved that, despite the low level of investment in anti-seepage pipe, but also have some effect, but did not play the best benefits of anti-seepage pipe; directly into two seepage control, water saving effect is very obvious,